Apparatus for concentrating solutions.



W. J. WAYTE. APPARATUS FOR CONCENTRATING SOLUTIONS. APPLICATION men FEB.20.1917.

925%, 1 68. Patented Mar. 5, 1918.

4 SHEETS-SHEET I.

W. J. WAYTE.

' APPARATUS FOR CONCENTRATING so'Lunous.

APPLICATION FILED FEB. 20. I917- I Patented Mar. 5, 1918.

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APPLICATION FILED FEB. 20.1917. 1,258,168,

Patented Mar. 5, 1918.

4 SHEETS-SHEET 3- 61. Hon/12134 W. J. WAYTE.

APPARATUS FOR CONCENTRATING SOLUTIONS.

8 m we 14 fez i/alfamZI/d/f Patented Man. 5,1918;

4 SHEETSSHEET 4 APPLICATION FILED FEB- 20. I91]- i,258,168.

$3M; aftoz WALTER J. WAYTE, OF NEW YORK, N. Y.

APPARATUS FOR CONCENTBATING SOLUTIONS.

Specification of Letters Patent.

Patented Mar. 5, 1918.

Application filed February 20, 1917. Serial No. 149,846.

T 0 all whom it may concern Be it known that I, WALTER J. l/VAYTE, a citizen of the United States, residing at New York, N. Y., have invented certain new and useful Improvements in Apparatus for Concentrating Solutions, of which the following is a clear, full, and exact description.

This invention relates to apparatus for concentrating solutions, and is particularly adapted for the concentration of phosphoric acid. One of the objects of the invention is to provide a closed chamber in which the solution to be concentrated can be heated so as to concentrate the phosphoric or other acid, and to provide as a part of said cham- These being among the objects of the present invention, the same consists of certain features of construction and combinations of parts to be hereinafter described and then claimed with reference to the accompanying drawings showing a desirable embodiment of the invention, in which,

Figure 1 is a transverse sectional viewv of the apparatus, parts being in elevation;

Fig. 2 is a side elevation of the apparatus, the collecting hood being removed;

Fig. 8 is an enlarged transverse section of parts of the apparatus, showing the collecting hood and tank closed together so as to constitute a closed chamber;

Fig. 4 is a similar section, with the skids shown in Fig. 3 removed andthe tank resting upon the track below the collecting hood;

Fig. 5 is a horizontal sectional plan of the tank showing some of the heating coils in position thereon; and

Fig. 6 is an enlarged longitudinal section of Fig. 5 on line 6-6.

Referring to the drawings, the frame 10 of the apparatus is provided with a platform or floor 11, and a superstructure 12 above said floor. The fume collecting and escape hood 13 is provided with walls 13 18 which converge toward a chimney or flue 14- which extends through the superstructure 12. Said hood constitutes one part of the closed chamber 15.

The other part of the closed chamber .15 is constituted by a solution circulating tank 16, which is of such size that it may be fitted against the lower edge of the hood 13 so as to provide a closed chamber '15. Said tank as shown more clearly in Figs. 56, is provided with compartments such as 17, the walls 18 of which are lower than the side walls of the tank.

Said tank may be run underneath the hood 13, to which end a guide or track 19 is arranged upon the floor or platform 11, and the said tank is provided with wheels 20, which may run upon said track. The tank 16 is raised from the track and held in raised position by means to be hereinafter described, and when raised up to the hood 13 it forms a closed chamber therewith.

A supply pipe 21 for steam is provided and this leads to a plurality of steam coils such as 22. As shown in Figs. 8L-the steam coils 22 are arranged in a horizontal plane and are supported from the frame 10'of the apparatus by depending supports or hangers 23, and by cross-pieces 24 which are attached to the lower ends of said hangers, and upon. which the steam coils rest. There is a steam coil 22 for each of the co1n-' partments 17 of the circulating tank, and

said coils are so positioned that, when the tank is in proper position and raised up to the hood, the coils will enter the corresponding compartments 17. After the steam is passed through the coils it enters return pipes such as 25 from whence, it passes to a suitable trap 26 shown in Figs. 1 and 2.

When the apparatus is ready to do its work, the tank 16 will be positioned at one end below a stationary inlet 27 for the solution to be concentrated. The solution will then circulate through the compartments 17- of the tank, from'one compartment to the other, to which end the walls of the compartment are provided as shown in Figs. 3 and 6, with openings 28 and 29. The openings 28 are arranged adjacent the partition wall 30 between the two series. of compartments shown and the openings 29 are arranged adjacent the outer wall of the tank, and the two series of compartments will communicate with each other as at 31. By this means the solution will circulate from one compartment to the other and will move back and forth transversely of the tank, until it reaches the discharge outlet 3:2 for the surplus solution. As this apparatus is most generally used for'concentrating acids, the tank should be lined with an acid resisting material such as sheet lead and the par titions of the compartments should also be made of or lined with similar material.

WVhenever it is desired to put the apparatus in condition for doing its work of con centration, the tank 16 is run upon the track 19 until it is positioned directly underneath the hood l3. Jacks such as 34 are then placed upon the platform or floor 11 underneath the four corners of the tank. These jacks are then operated to raise the tank up to the hood 13, thereby providing a closed chamber 15. Ir" it be desired to use the jacks for another similar apparatus, they are removed, after there has first been placed underneath the tank removable skids or supports such as 85, which may rest across the track 19 as shown clearly in Figs. 1 and 3. The solution to be concentrated is fed into the tank from the inlet 27, and will circulate through the compartments 17 as before described. When the compartments are sufiiciently filled with the solution, steam is let into the steam coils 22 so as to heat the solution and thus concentrate it, the heating being continued and the solution admitted through the inlet 27 as long as desired, any surplus escaping from the discharge spout 32. When the desired concentration has been efi'ectuated, the jacks are again applied under the tank 16, so as to hold it raised and the skids 35 are removed. The tank may now be lowered by the action of the jacks, so as to place it back upon the track .19. Some of the solution will be found to be crystallized upon the steam coils and the accumulation may now be scraped off of the coils so as to be discharged into the tank. After the tank has been lowered onto the track 19 and is ready for removal, it is moved along the track 19 from underneath the hood 13 to-any desired point. The contents of the tank may now be removed in any desired manner.

It is obvious that this invention is susceptible of modification, as parts may be added, parts substituted and parts modified, without departing from the spirit and scope of the invention as expressed in the claims.

What I claim as new is:

1. In apparatus for concentrating solutions. as for example one of phosphoric acid, the combination of a solution circulating tank provided with a plurality of comparatively shallow compartments, said compartments having communicating means for esablishing a circuitous How of said solution horizontally through the sequence of compartments, a stationary escape hood, said tank and hood being adapted to form a closed chamber, heating means comprising a plurality of heating coils corresponding in number with said compartments, and said coils connecting with each other above said compartments, whereby each may be positioned in its own compartment independently of the other coils, and means comprising cross-bars for suspending said heating means in stationary position from said hood, and for positioning said coils in the said compartments corresponding therewith, said tank being movable upwardly to and downwardly from said hood and heating means, and said coils resting upon said cross-bars while the latter provide abut ments for the bottom of said tank when it is in raised position, 7

2. In apparatus for concentrating solutions, as for example one of phosphoric acid, the combination of a .solution circulating tank, a stationary escape hood, heating means supported below said hood, said tank and hood being adapted to form a closed chamber, and said heating means extending into said tank, and a guide-way for said tank, extending away from said hood in a lateral direction, and onto which said tank may be lowered and be guided away from said hood.

3. In apparatus for concentrating solutions, as for example one of phosphoric acid, the combination of a solution circulating tank, a stationary escape hood, and heating means supported below said hood, said tank and hood being adapted to form a closed chamber, and said heating means extending into said tank, said tank being provided with wheels, and a track extending away from said hood, and onto which said wheeled tank may be lowered.

4. In apparatus for concentrating soludSIOIlSyflS for example one of phosphoric acid,

the combination of a solution circulating tank, a combined escape hoodand heater, supporting means for said hood, a track extending below said hood, between waich track and hood a space is provided in which said tank may be raised and lowered, and means for raising said tank from said track to close said tank upon said hood and for lowering said tank onto said track.

5. In apparatus for concentrating solutions, as forexample one of phosphoric acid, the combination of a solution circulating tank, a combined escape hood and heater, a stationary frame'tor supporting said hood, a track extending below said hood, and between the sides of said frame, between which track and hood a space is provided in which said tank may be raised and lowered, and

means for raising said tank from said track to close said tank upon said hood and for lowering said tank onto said track.

6. In apparatus for concentrating solutions, as for example one oii phosphoric acid, the combination c1 a solution circulating tank, a combined escape hood and heater,

supporting means for said hood, a track extending below said hood, between which track and hood a space is provided in which said tank may be raised and lowered, and

means fo raising said tank from said track to close said tank upon said hood and for lowering said tank onto said track, and skids upon said track by which said tank is supported against said hood when said raising and lowering means are removed from said tank.

Signed at New York, N. Y., this 16" day Sonics of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, B. C. 

